A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5990-01-644-3095
NSN 5950-01-110-7128
NSN 5975-00-259-0267
NSN 6320-01-006-6138
NSN 5895-01-005-1665
NSN 5950-01-410-7685
NSN 5999-00-285-2987
NSN 6645-01-511-3272
NSN 5965-00-452-0967
NSN 5945-01-510-3530
NSN 5996-01-621-7893
NSN 5999-01-500-1578